Digital copyright management method and system

Abstract

The invention discloses digital copyright management method and system. In the method, a private key of client terminal equipment is divided into a first assistant private key and a second assistant private key, and the first assistant private key and the second assistant private key are respectively stored in safe storage equipment in the client terminal equipment and portable equipment which can be connected to the client terminal equipment; when an encrypted content key is received, the assistant private keys stored in the safe storage equipment and the portable equipment are respectively obtained; and the assistant private keys are utilized to recover the private key of the client terminal equipment, the private key is used for obtaining the content key by decryption, and the content key is used for obtaining a digital content by decryption, so that a user can obtain the digital content. The method and the system can better control the copyright of the digital content.

Description

technical field [0001] The invention relates to the field of multimedia technology, in particular to a digital rights management method and system. Background technique [0002] With the rapid development of digital media and network technologies, the application of digital content, such as the application of digital media content, is becoming more and more extensive, which enriches people's entertainment and life. However, due to the characteristics of easy duplication of digital content, driven by commercial interests, the phenomenon of piracy and copying is serious, which poses a serious challenge to the interests of digital content owners such as digital media creators, content providers, service providers and operators. . This requires digital content providers and operators to protect their products from being used and shared by unauthorized users while meeting the needs of authorized users. This technology is Digital Rights Management (DRM) technology. [0003] DRM ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned digital rights management method is mainly based on the digital rights management of the client device, which mainly relies on the client device to control the use of the copyright object. As long as the client device obtains legal digital content and authorization information, it can use the digital content normally. If the client device If the device is misappropriated by an illegal user, the illegal user can continue to use the digital content and authorization information in the client device, and continue to use the device to purchase and consume copyright content. Therefore, the copyright of digital content has not been well controlled

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